class_docstr: Traversable container for a package's resources via its reader.
code: def is_dir(self):
      return True
  
imports: import abc
  import io
  import itertools
  from typing import BinaryIO, List
  from .abc import Traversable, TraversableResources
label_desc: Use image node_id 2 for calling the ResourceContainer obj's underlying member method code with example usage: obj.is_dir() and returns: True